Receptacle



O. J. PARKS.

RECEPTACLE.

APPLICATION FILED DEC. 15. 1919.

0. J. PARKS. RECEPTACLE- APPLICATION FILED DE \C- 15, 1.919.

Patentad July 19, 1921,

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ILLINUIS, ABSIGNQJR T0 GENERAL AMERI- CAN TANK CAR CORPORATION, OF'GHICA, ILLINUIS, A CORPORATIQN 01E WEST VIRGINIA REGEP'IAGTE.

Specification of Letters Patent. Patented July 1, 1921,.

Application filed December 15, 1919. term] No. 345,0972

To all whom it my concern:

Be it known that I, OSTRANDER J. PARKS,

a citizen of the United States, residing at River Forest, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Receptacles, of which the following is a specification.

My invention relates more particularly to receptacles in which substances of such character that a pressure is generated therein, such as for example gasolene, are stored, my invention having particular reference to tank cars for explosive fluids; and my object, generally stated, is to provide a novel, simple and economical construction of removable cover for the manhole of the receptacle to the end that a positive closure will be efiected and injury to the workman in removing the cover from the receptacle will be prevented.

Referring to the accompanying drawings :Figure 1 is a plan view of a manhole,

or dome, ring which in practice would be securely fastened to the top of the receptacle to surround the opening to be controlled by the cover, the cover for the manhole being shown in position thereon. Fig. 2 is a similar view of the ring of Fig. 1 with the cover removed, and the nuts on the studs of the dome ring also removed. Fig. 3 is an enlarged section taken at the hue 3 on Flg. 1 and viewed in the direction of the arrow, this view showing the structure of Fig. 1 as assembled with the tank of a tank car, the tank being shown broken away. Fig. 4 is a broken, enlar ed, sectional view taken at the line 4: on 1 and viewed in the directionof the arrow, showing the structure assembled with a tank, the latter being broken away; and Fig. 5, a similar view taken at the line 5 on Fig. l and viewed in the direction of the arrow, also showing the structure of this figure assembled with the tank.

In the arrangement shown, the upper surface of a tank car is rep-resented at 6, this surface being formed with the usual manportion 9 spaced therefrom, there being secured to the upper surface of the portion 8 a flanged manhole, or dome, ring 10 WhlCh surrounds the manhole 7 the ring 10 being secured to the wall portion 8 as by means of rivets indicated at 11. The ring 10, in accordancewith common practice, is provided with the filling opening 12 and the vent opening 13, the opening 12 having screwed thereinto from its lower end a pipe 14 which reaches preferably to a point close to the bottom of the tank and through which the fluid is introduced into the tank. The openings 12 and 13 are provided with, removable plugs or caps 15 and 16, respectively, for closing these openings to the atmosphere. The ring 10 is provided with an annular series of stud-bolts 17 whichextend upwardly therefrom and are preferably spaced equidistantly apart with the series thereof concentric with the manhole 7 as shown, the upper ends ot'these studs being threaded. The inner marginal edge of the ring 10 which extends over the opening 7 contains, in its upper surface, an annular channel 18 for receiving a gasket 19, as for example of lead, for'aidin in the forming of a tight joint between t e cover and the ring 10.

The cover for the manhole 7 is repreof the cover being provide with a depending annular flange 21 at which the cover extends into the opening in the ring 10 and with a depending annular flange 21 adapted to engage the gasket 19 when the cover is in position. The body 20 of the cover is provided about its periphery with a series of recesses 22 which extend in a circumferential direction, these recesses opening in the same direction and being of a number equal to the number of studs 17 and similarly spaced apart, the periphery of the body portion 20 at points between adjacent ones of the recesses 22, being notched as indicated at 23 for a purpose hereinafter explained. The cover 19, when in sealing position, occupies the position shown in Fig. 1 wherein it will be noted the studs 17 extend into the recesses 22 of the cover, in which osition the cover is held down securely y nuts 24 screwed upon the upper ends of the studs 17 and engaging the upper surfaces of the cover to provide added strength for the recessed portions 22 and an easier release from the nuts 24 the extended portions in which the recesses 22 are formed are thickened and their upper surfaces areout departing from the spirit of my invenraised above the plane o the top of the cover 19. Tlge doover is, alllelog Sl110WI1 as formed filth u w l exten 25 apertur as iridicated at '26 and w ich serve, in conjunction with an apertured lug 27 on the plug 15 to receive a seallng wlre 28 for the usual purpose. The cover 19 is also provided with an eye 29 secured'thereto in depending position for connection with a chain 30 which is connected at its opposite end with an eye 31 secured to, and depending from, the ring 10, this construction serving as a means for restrainin the cover from dropping to the ground w on it is removed from the manhole and freed from the grasp of the operator.

It will be understood from the foregoing that the'worlnnan, to remove the cover 19, may first loosen the nuts 24 sufiiciently to permit turning of the cover, to a position in which the latter is out of interlocked position with these nuts, such position in the particular construction illustrated being that in which the recessed portions 23 of the cover 'ster with the nuts 24, the operator then 1i ing the cover free of the tank I to permit access of the latter through the manhole. e

The feature of providing the nuts which have overlapping relation to the cover in one position of the latter, and the adaptability of the cover to its removal from the tank, without removing the nuts, is of great advantage inasmuch as pressure which mag have accumulated in the tank and to whic the cover is subjected, is permitted to escape from the manhole 7 around the cover 20 upon loosening the nuts 24, but the cover is prevented from being blown from'the tank y its interlocking relation with the nuts, thereby avoiding injury to the workman, the cover being readily removable, following the loosening of the nuts 24 by merely rotating it to the releasing posit-ion referredto.

While I have illustrated and described a particular construction embodying my invention, I do not wish to be understood as intending to limit it thereto as the same may be variously modified and altered withaway from the tank, said cover being adapted to be rotated at said opening and provided at intervals, at its marginal portion, with radially-extending thickened portions which are spaced from the body of the cover and extend beyond the edge thereof with their upper surfaces raised above the plane of the cover and which with the latter form circumferentially-extending recesses which extend in the same direction, and each presenting, by reason of said radially-extending portions and the adjacent portions of sald body portion, a pair of surfaces spaced apart and adapted, in one position of said cover, to interlock with said shoulder portions and limit outward movement of said cover, but be out of interlocked relation with said shoulder portions when rotated to another position of said cover, adapting the I cover tobe bodily removed from the tank.

2. The combination with a receptacle containing an opening, of closure means therefor comprism a ring secured to the top of the receptac e and surrounding the openin said ring bein equipped with an annu ar series of stu s extending-upwardly therefrom and havi screw threaded upper portions, nuts screwing on said studsiand a cover provided with a series of circumferentially-disposed recesses, the edges of the cover surroundin said recesses being thickened and extending beyond the nuts and overlapping said ring, said recesses being adapted in one position of said cover to Y partially surround and interlock the said OSTRANDERI J. PARKS. 

